![Lab Notes](http://s1.studyres.com/store/data/014222155_1-48ab2907fba9d1ca40761400b44cf769-300x300.png)
Lab Notes
... • Dermal tissue – the outermost cell layers of a plant • In young plants and non‐woody plant parts, the outermost surface is the epidermis, a single layer of flattened cells • In leaves and stems, epidermal cells secrete cutin, a waxlike substance that constitutes the cuticle • The cuticle prevents ...
... • Dermal tissue – the outermost cell layers of a plant • In young plants and non‐woody plant parts, the outermost surface is the epidermis, a single layer of flattened cells • In leaves and stems, epidermal cells secrete cutin, a waxlike substance that constitutes the cuticle • The cuticle prevents ...
Evolution of Australian Biota Study Day
... Broad-leaved rainforests of Gondwana At the time of Australia’s rifting from Antarctica during the early Tertiary period (approximately 55–50 million years ago) broad-leaved rainforest covered much of the continent. Conifers shared the forests with flowering plants and the fossil pollen record shows ...
... Broad-leaved rainforests of Gondwana At the time of Australia’s rifting from Antarctica during the early Tertiary period (approximately 55–50 million years ago) broad-leaved rainforest covered much of the continent. Conifers shared the forests with flowering plants and the fossil pollen record shows ...
Ephedra-Jointed fir Kingdom: Plantae Division: Gnetophyta Class
... axils. Each leaf is inervated by two unbranched veins that run parallel to each other. As the scale leaves are deciduous & non-photosynthetic , function of photosynthesis is carried out by young green stem. ...
... axils. Each leaf is inervated by two unbranched veins that run parallel to each other. As the scale leaves are deciduous & non-photosynthetic , function of photosynthesis is carried out by young green stem. ...
Plant Reproduction and Development
... immature male gametophyte consisting of two cells – Tube cell (will form a pollen tube after pollination) – Generative cell (will divide by mitosis to form two sperm after pollination) ...
... immature male gametophyte consisting of two cells – Tube cell (will form a pollen tube after pollination) – Generative cell (will divide by mitosis to form two sperm after pollination) ...
Biology, 8th Edition
... Flowering plants are vascular plants that reproduce sexually by forming flowers and, after a unique double fertilization process (discussed later), seeds within fruits. The fruit protects the developing seeds and often aids in their dispersal (see Chapter 36). Flowering plants have efficient water-con ...
... Flowering plants are vascular plants that reproduce sexually by forming flowers and, after a unique double fertilization process (discussed later), seeds within fruits. The fruit protects the developing seeds and often aids in their dispersal (see Chapter 36). Flowering plants have efficient water-con ...
Biology 3 Plants Ch 12
... HAPLOID AND DIPLOID LIFE STAGES Haploid life stage Diploid life stage ...
... HAPLOID AND DIPLOID LIFE STAGES Haploid life stage Diploid life stage ...
ppt - Barley World
... • Pollen germinates and the vegetative (tube nucleus) grows through the style to the ovule • The two sperm use the tube as conduit ...
... • Pollen germinates and the vegetative (tube nucleus) grows through the style to the ovule • The two sperm use the tube as conduit ...
seed coat
... Angiosperm Pollination Fertilization • The pollen grain produces a pollen tube that extends down the style toward the embryo sac • Two sperm are released and effect a double fertilization, resulting in a diploid zygote and a triploid (3n) endosperm ...
... Angiosperm Pollination Fertilization • The pollen grain produces a pollen tube that extends down the style toward the embryo sac • Two sperm are released and effect a double fertilization, resulting in a diploid zygote and a triploid (3n) endosperm ...
Plant Diversity I: Colonization by Land Plants
... rosin prevents water loss and fungal attacks deters insects although most pine roots have mycorrhizal fungi fossilized resin = amber ...
... rosin prevents water loss and fungal attacks deters insects although most pine roots have mycorrhizal fungi fossilized resin = amber ...
File
... environments: 1) pollen, and 2) the seed. These structures are found in both gymnosperms and angiosperms. Pollen is the male gametophyte (which will produce the sperm), wrapped in a protective coating. Pollen allowed for the dispersal of the male gamete (sperm) over longer distances and without the ...
... environments: 1) pollen, and 2) the seed. These structures are found in both gymnosperms and angiosperms. Pollen is the male gametophyte (which will produce the sperm), wrapped in a protective coating. Pollen allowed for the dispersal of the male gamete (sperm) over longer distances and without the ...
Meanings and derivations of some native plants in the Pacific
... name it. For example, when you see an “L.” following a scientific name, it means that it was originally described and named by Linnaeus. His system still works surprising well in this age where relationships between living organisms can be determined by genetic sequencing. Latin was used to name pla ...
... name it. For example, when you see an “L.” following a scientific name, it means that it was originally described and named by Linnaeus. His system still works surprising well in this age where relationships between living organisms can be determined by genetic sequencing. Latin was used to name pla ...
Biology 1407 Exam 3 Plants
... - female part of flower (ovary) produces spores that grow into female gametophytes which produce eggs; all within the ovules in ovary - male part of flower (stamen) produces spores that grow into male gametophytes (called pollen grains) which are released and move to female flower in the wind or wit ...
... - female part of flower (ovary) produces spores that grow into female gametophytes which produce eggs; all within the ovules in ovary - male part of flower (stamen) produces spores that grow into male gametophytes (called pollen grains) which are released and move to female flower in the wind or wit ...
Chapter 19: Kingdom Plantae
... – Dominant generation = diploid sporophyte = pine tree – Tiny gametophytes are in cones- protection ...
... – Dominant generation = diploid sporophyte = pine tree – Tiny gametophytes are in cones- protection ...
Seed Plants - eebweb.arizona.edu
... Megasporangium is surrounded by integument made of sporophytic structures. Megasporangium and the integument together form the ovule (which develops into a seed). ...
... Megasporangium is surrounded by integument made of sporophytic structures. Megasporangium and the integument together form the ovule (which develops into a seed). ...
The Evolution of Seed Plants
... integument made of sporophytic structures. Megasporangium and the integument together form the ovule (which develops into a seed). ...
... integument made of sporophytic structures. Megasporangium and the integument together form the ovule (which develops into a seed). ...
CHAPTER 38
... • After landing on a receptive stigma, a pollen grain produces a pollen tube that extends between the cells of the style toward the ovary • Double fertilization results from the discharge of two sperm from the pollen tube into the embryo sac • One sperm fertilizes the egg, and the other combines wit ...
... • After landing on a receptive stigma, a pollen grain produces a pollen tube that extends between the cells of the style toward the ovary • Double fertilization results from the discharge of two sperm from the pollen tube into the embryo sac • One sperm fertilizes the egg, and the other combines wit ...
Topic 4: Plant Diversity II
... VI. Phylum Gnetophyta (the gnetophytes) A. apparently a monophyletic group, but could be paraphyletic B. ~70 living species in 3 genera: Welwitschia, Ephedra, Gnetum C. some evidence that they form a clade with angiosperms (if so, then gymnosperms are what?) 1. vessels in xylem (common in angiosperm ...
... VI. Phylum Gnetophyta (the gnetophytes) A. apparently a monophyletic group, but could be paraphyletic B. ~70 living species in 3 genera: Welwitschia, Ephedra, Gnetum C. some evidence that they form a clade with angiosperms (if so, then gymnosperms are what?) 1. vessels in xylem (common in angiosperm ...
Section 24–1 Reproduction With Cones and Flowers
... © Pearson Education, Inc. All rights reserved. ...
... © Pearson Education, Inc. All rights reserved. ...
Flower Diagram Removed
... One sperm fertilizes the egg, forming a diploid zygote The other sperm combines with 2 polar nuclei to form a triploid nucleus that becomes the endosperm double fertilization (when 2 nuclei are fertilized) ensures that the endosperm develops only in ovules where the egg has been fertilized See ...
... One sperm fertilizes the egg, forming a diploid zygote The other sperm combines with 2 polar nuclei to form a triploid nucleus that becomes the endosperm double fertilization (when 2 nuclei are fertilized) ensures that the endosperm develops only in ovules where the egg has been fertilized See ...
30LecturePresentation
... Microscopic male and female gametophytes (n) are nourished and protected by the sporophyte (2n) ...
... Microscopic male and female gametophytes (n) are nourished and protected by the sporophyte (2n) ...
chapter21_Plant Evolution(5
... Speaking for the Trees (revisited) • Every atom of carbon in a tree was taken up from the air in the form of carbon dioxide • A tree is about 20 percent carbon by weight, so enormous amounts of carbon are stored in forests • Burning forests to make way for agriculture or other uses adds carbon diox ...
... Speaking for the Trees (revisited) • Every atom of carbon in a tree was taken up from the air in the form of carbon dioxide • A tree is about 20 percent carbon by weight, so enormous amounts of carbon are stored in forests • Burning forests to make way for agriculture or other uses adds carbon diox ...
chapter21_Sections 5
... Speaking for the Trees (revisited) • Every atom of carbon in a tree was taken up from the air in the form of carbon dioxide • A tree is about 20 percent carbon by weight, so enormous amounts of carbon are stored in forests • Burning forests to make way for agriculture or other uses adds carbon diox ...
... Speaking for the Trees (revisited) • Every atom of carbon in a tree was taken up from the air in the form of carbon dioxide • A tree is about 20 percent carbon by weight, so enormous amounts of carbon are stored in forests • Burning forests to make way for agriculture or other uses adds carbon diox ...
Classification of Living Things
... enlarges and the scales separate. This separation allows the seeds to drop out of the cone and are dispersed by animals, such as Female Pine Cones with separated scales chipmunks & squirrels. ...
... enlarges and the scales separate. This separation allows the seeds to drop out of the cone and are dispersed by animals, such as Female Pine Cones with separated scales chipmunks & squirrels. ...
You Light Up My Life
... Pollen • Pollen grains are sperm-bearing male gametophytes that develop from microspores • Allows transfer of sperm to egg without water • Can drift on air currents, or be carried by pollinators ...
... Pollen • Pollen grains are sperm-bearing male gametophytes that develop from microspores • Allows transfer of sperm to egg without water • Can drift on air currents, or be carried by pollinators ...
Pinophyta
The conifers, division Pinophyta, also known as division Coniferophyta or Coniferae, are one of 12 extant division-level taxa within the Kingdom Plantae (Viridiplantae) and 10 within the extant land plants. Pinophytes are gymnosperms, cone-bearing seed plants with vascular tissue. All extant conifers are woody plants with secondary growth, the great majority being trees with just a few being shrubs. Typical examples of conifers include cedars, Douglas-firs, cypresses, firs, junipers, kauri, larches, pines, hemlocks, redwoods, spruces, and yews. The division contains approximately eight families, 68 genera, and 630 living species.Although the total number of species is relatively small, conifers are of immense ecological importance. They are the dominant plants over huge areas of land, most notably the boreal forests of the northern hemisphere, but also in similar cool climates in mountains further south. Boreal conifers have many wintertime adaptations. The narrow conical shape of northern conifers, and their downward-drooping limbs, help them shed snow. Many of them seasonally alter their biochemistry to make them more resistant to freezing, called ""hardening"". While tropical rainforests have more biodiversity and turnover, the immense conifer forests of the world represent the largest terrestrial carbon sink, i.e. where carbon from atmospheric CO2 is bound as organic compounds.They are also of great economic value, primarily for timber and paper production; the wood of conifers is known as softwood.Conifer is a Latin word, a compound of conus (cone) and ferre (to bear), meaning ""the one that bears (a) cone(s)"".